Several years ago I was delighted to listen to Dr. Mary Newport speak about her discovery of the value of coconut oil in fighting memory loss. She used coconut oil to stop her husband's decline with Alzheimer's disease and even to regain some of what was lost. It was and is an amazing story. You can read Newport's story here, where you can also see the improved drawings of a clock her husband did as he regained some of his memory. See the case study on this topic here (PDF).
Since then, many people have tried this simple step. The above story is just one of many examples. It seems that Newport's experience with her husband isn't unique.